Regarding Zonal Control, if I specified the building is zonally control why is there also a check box on the HERS screen?

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This check box is to enable modeling the exception for zonally controlled systems with a bypass duct to only meet 150 CFM/ton. The 150 CFM/ton (an energy penalty) does not have to be verified by a HERS Rater, however any level higher than 150 CFM/ton for a zoned system and any if you want to include a bypass duct and not meet 350 CFM/ton.

Category: 4. Lowrise Residential Title 24

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